Thoughts

SELECT * FROM gallery2 WHERE topic_id="155251" UNION SELECT * FROM gallery2 WHERE topic_id="284591" UNION SELECT * FROM gallery2 WHERE topic_id="1435501" UNION SELECT * FROM gallery2 WHERE topic_id="563117" UNION SELECT * FROM gallery2 WHERE topic_id="852485" UNION SELECT * FROM gallery2 WHERE topic_id="990533" UNION SELECT * FROM gallery2 WHERE topic_id="102714" UNION SELECT * FROM gallery2 WHERE topic_id="18661" UNION SELECT * FROM gallery2 WHERE topic_id="193287" UNION SELECT * FROM gallery2 WHERE topic_id="1114584" UNION SELECT * FROM gallery2 WHERE topic_id="502152" UNION SELECT * FROM gallery2 WHERE topic_id="448996" UNION SELECT * FROM gallery2 WHERE topic_id="989273" UNION SELECT * FROM gallery2 WHERE topic_id="1711051" UNION SELECT * FROM gallery2 WHERE topic_id="1130165" UNION SELECT * FROM gallery2 WHERE topic_id="472008"